Auxiliary air-valve for carbureters.



- A. C. STEWART.

AUXILIAR-Y AIR VALYE PGR GARBURETERS. APPLICATION FILED AUG. 16, 1911.

Lgg, Patented May 14,1912.

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Be t known thats'I, ALFREDO. STEWART,

a l'citiiien of thej UnitedlStatee, residing at i'ngeles,

vin the county o'Los Angeles and State' offCalifornianhare invented a new.-= anduseful Aub'iiliaryAir-Valve for Carbureterajofwhich the 'following is a.

Tliisinven'tion relates to a valve for controlling th'e rsupply of auxiliary air between Athe 'carburetor and the. intake of an internal i Vcombustion engine, and the main object of the. invention to provide a. device lfor this; purpose which is simple inconstru'ctio'n, easy.

to operate, and give'san accurate' regi'ilaton :ofthe air supply.l j u Anotlerfobjeet of the invention is to pro- 'theinlet pipe or manifold of' enginesin such manner that no extension vor.

of theinyention'iirill. appear.

invention, and referring tl'iereto: lFigure l. is a. side elevationfof a' portion of an engine and ozu'bureter there-zl `for, vWitl'ilthe auxiliary-air.Valyeandits conf trolling ineens3 Fig. 2-is a li'o'rilzonta'il"seo-` vtionofgthe auxiliary air yalve.

l designates a portion of 'an internal coinbuati n engine and 2 the manifold -for' said I- engine, connected'byjnlet pipe 3 to a car- 5.

'bureter indicated at a. The auxiliary air valve -isconnected to said inlet '1 pipe 3 to A handle 10 pivotally mounted on said Wire which is mounteda slid control adiniseion'of the auxiliary air. Said auxiliary air valve consists of a casingr 5 in able'valve member hereinafter described, connected to. and

` operated bythe inner or -movable wire? of a Bowden `Wire Whose .outer flexible, tubular casing 8 is secured at one end to the casing 5 and at the other end 'to a support 9 located in any suitable position, andgcai'rying a Support 9 andconnected to the inneiwire T" of the l1owdenl wire. Said Bowden Wire caeing. 8 maybeclamped-:to the support 9 and casing 5 by' set screws 1l and l2.

T,he 'Bowden Wire' herein lreferred to 1s that' described in patent to E. M. Bowden,

jiscylindrical and cloned at its outer end by block ll screwed into eairgl outer end said I Specication of Letters Patent. Application ledbugust 18, 1911.

' Wire, saidA 'Wire 2L on ite 'outer endcoperatin nula'r shoulder formed in t 'eouter end' and Said: body is furthereasing, this cylindrica is drawn farther,

largement of the of auxiliary air maintenir oannninnrnna .Serial No.' $411,448.

4.block loeing axially perforated asat l5 4to receiye the casing 8 ofthe Bowdenwire and 12'beingscrewed into. said blockto grip Saidcasing of the Bowden the fastening .screw provided .with air' Patenten nay ia, iene.

'inletlopeningsl7 lin its y 'side-Walls and a valve Vbody-18 ismounted to slide inthe cylindrical casing 5 and con'- nected to body 18 and body 18 is .formed with a vconical Avalveiface controlling passage for the'auXiliary-air;

with an ani ortion .of thevalve" the space bet-Ween this' cylindrical portion 25 andthe tapering ex tension 24.01? the valve being extended into Said; 'fastenedby screw 20. Said-j body serving as the ,80

The operation.- of fthe inventionv is as folL lows.' valve is in closed position, the conical -Valife o'- communicationhfromthe openings 17 to theairfinlet4 pipe... Wliennt is desired to Vopen the ilzalve,' thef handle 10 is operated''to.

-draw the inner Wire VToi-the Bowden `,Wire outwardly,

Normally, 'When'Jtjlie auxiliary air? face-211116253@ against, the lsho'ulder 22, 'cutting cauiig Athe valve body lxto vmove so as to separatetheyalve face 21 from Vthe shoulder 22 and open communication from the outer 'air of the'ope'ning Vto inlet pipe 3, tliesize the valve extension 24 giyiinga gradual enspace between a'aid extenincreasing as the valve body' by reason of thetaper of sion and the casing portion Y25 as the Valye' `is,withdrawn. The valve body alsomoyes over the opening i7 in the side ofthe-cylin Y fdrical casing, giving a further regulatii-ig` .By the means labove described-the amount admitted to the inlet pipe.'

conveniently reguf V can be accurately and lated.

.lVhatI claim is: i x An auxiliary air valve for the inlet pi ioo of. an- Vinternal combustion engine, ooinpris-` ing a vcylindrical casing having a reduced A portion adapted for connection to said inlet pipe and aeh'oulderfadjacent to said reduced poi-tion, and provided with opening/sin its Side, :t valve body slidably xnounted in saidl cylindrical casing and movable to 'closeor open more or less of said openings, and haw-v viner a. conical valvevfuce vcoperating with v .5.sa1d shoulder of sald casing, said valve body ,being provided with autapeljed extension exv tending through said reduced portion ofsaid casng, a flexiblev tubular casln slecured'to theouter end'of said cylindrica casing and. 0 having a` flexible wxresecured to said valve.

bodyA and .extending through 'sid' 'flexible tubular casing and an operating handle e011-,v

nected to .said flexible Wire.

'da ofAlu st, 1911.

y y ALFREDC.

In presence of#- ARTHUR?. KNIGHT,

GLADYS RUSSELL.

STEWART.'

In testimony Whereof,l I have hereunto :set g my hand at Los Angeles, Californie, this 8th,?, 

